Windows 10 Is it legitimate to use a Win7, 8, 8.1 license key to activate Win 10?

[Roy KWH]

Hi,

A question about Windows 10 License.

Is it legitimate to use a Win7, 8, 8.1 license key to activate Win 10?


Findings form internet:

https://www.howtogeek.com/266072/yo...ws-10-for-free-with-a-windows-7-8-or-8.1-key/

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